Thinking Long term:
When your child is older, if you have a side hustle, you can pay him / her and it is a business deduction (not just a credit). As they are under 18 and your dependent there are no employer taxes like CPP and EI. They pay taxes, but the first $11k is tax free for everyone. They do have to do legitimate work for your business. My DD completed some webpage work, for example, or filing / cleaning out the office documents, etc.
Today:
The other none income tax benefits are for services like city-subsidized recreation activities (swimming / dance / skating lessons), library card, parent and tot drop in, terrific kids splash parks and reduced cost transit. We take these for granted, but when I lived in the USA, all of these were quite expensive, 3x as much or non-existent close by. Our kid budget dropped by about $100 per month when we moved back to Canada, because of this, and they were involved in more activities... so actively look for it and take advantage of it.